If you want to install Windows 8 yourself, here are some useful links to get you started:
Installing from a USB Stick (Redmond PIE)e
Restore the Start Menu (It is really just a registry setting, but this little app hides it with a button.)
Because this is just the developer preview, I would not get too excited or disappointed by what appears to be missing. Having said that, here’s short list of some things that appear to be missing:
task switching – while you can swipe from left to right to cycle through Metro apps, there does not appear to be an easy way to close them or shut them down nor to switch from Metro to non-Metro apps
customizing the start screen – it appears that you cannot change the color scheme. I’m sure this is just for the developer preview.
no easy way to find apps not on the start screen- you have to go to the desktop and perform a search from Explorer. You can, however, pin apps to the task bar or the start screen
integration with Windows Live – it’s there, but does not seem to be fully baked yet
no ‘nice’ transition from ‘classic’ to metro windows-because metro looks so nice, when you transition to or from a classic app, the transition is jarring. I don’t see an easy way around this either.
I will follow up as I get more time with time with the operating system.